Plant growth lamp



FIG. 1 is a perspective view of a plant growth lamp showing my new design where the plant growth lamp is in a first configuration of use;

FIG. 2 is a perspective view of the plant growth lamp where the plant growth lamp is in a second configuration of use;

FIG. 3 is a front elevational view of the plant growth lamp shown in FIG. 1;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof. 

CLAIM The ornamental design for a plant growth lamp, as shown and described. 